Rotary pump or motor



Nov. 19, 1929. J. D. E. WASHINGTON ROTARY PUMP 0R MOTOR Filed Jan. 12. 1927 2 Sheets-Sheet 2 mfi mu 1 .Lu 5 w H .m U

I I owe s'r JIM D. E.VWASH1NGTON,'OF KANSAS CITY, ivrrssoonrnssmivon or ONE-HALF ronixofi f l atented Nov. 19, 19 29 res n. WASHINGTON, or KANSAS CITY, M ssoom A V "ROTA Y PU P on MOTOR Q Application filed January 12, 1927. Serial No. 160,696.

This invention relates to mechanical devices especially designed for use in connection with the transmitting of power either through the method of driving the main shaft upon which the rotor of the machine is mounted, or

through the method of exerting the energy or driving power directly. against the pistons of the piston assembly which, in turn drives the main shaft in a mannerwhich permits of takingthe power therefrom.

The broad object of the instant invention contemplates improvements in machines or devices of the above-mentioned character which remove the objections usually found in such structures. Some of these objections are obviated by the neutralization .of all object-ionablecentrifugal forces which are usually setup at various speeds, concentric mounting of the main piston assemblyin the chamber of the housing to eliminate excessive radial throws and the use of afioatingpist'on assembly which floats within the chamber of the. housing'and remains in concentric relation to the annular wall thereof at all times.

An even further object of this invention is the provision of .a floating piston assembly which includes a means for hingedly interconnecting all the pistons thereof at their inner ends and within the main rotor of the device. a o

Many minor objects will appear during the course of the following specification, which sets forth in detail one form of the device which is universal in itsapplication in that it may be used effectively as rotary motor, a

compressor, a meter for high pressure gases, pressure motor for all liquids and high pressure gases, pump for all fluids and gases, water meter, booster in gas lines, hydraulic transmission, hydaulic safety stop for elevators or the like, vacuum pump and a blower or exhauster. These applications are merely set forth as an example of the scope covered by the simple structure shown in the accompanying drawings which show the preferred'form of the invention and in which,

Figure 1 is a side elevation of the device proaclied. EThis'pointofgreatestsizebeing" diametrically opposite the point of contact 7 just set forth,

of the same taken on line IIII of Fig 1;.

Fig. 3is' another" vertical central-section taken on line IIIIII of Fig. 2.

Fig. 4 is an end view of the rotor and piston I showing the'same removed from its operative position and entirely hinge;

Similar reference characters have been used'to designate like parts throughout the several views, and the numeral '8 designates themain housing having a chamber 9 formed separated from its therein whichmay be' closed by heads 10- and' 12 respectively. Theseheads maybe bolted or otherwise'secured to .housingS as shown at 13,v and-each should-be provided 1 withbe'arings 14 and l lf adapted to support a v rotorR." v i It isto be notedthat in practicingthis in; vention, the bearings 14 and 14 should be formed to support the rotor R in eccentric relationftothe annular wall 'of'cha'mber 9.- In this device, the rotor-R and: the chamber ,9 each have true annular -walls,,and'no cam" 7 surfaces orthe llkfa'fe present; 1 'fwv th particular reference at this time to the construction of the 'rotorfwhich maybe made of any suitable metal of a strong and durable: character, the same may be r formed tion 17 integraltherewith which'eiigagesbearings l t and i l #211161 one proj ection continues in the form of-ia mainishaft 18 extending exs e o y 0fthe dev s lx y u able t fi? ingbox .l'9 finay beus'ed as ,shown inFig. 2. Whentherotor R .is'in. place as illustrated in ofa mainbody ring' 15/clo'sed at its two ends 'by plates 16 all of 'whichiprovides' ahollow rotor R.- p-Each 'plate'f16 should have a projec-.

Figs. c ne, 3;}theouterperiphery ofthelan nularfwall oflring11.5 should engage the inner surface of annular wallof housing In th s A manner, .a l cavity. is j formed whichincreasesin size as its greatest size is 'Yap-' The piston assembly of this device includes a plurality of pistons 20, all of equal length and all liingedly interconnected at a center, within the rotor, which is concentric with the center of the chamber -9 of housing 8 and eccentric to the center of rotor R. In hinged? 1y connecting these pistons20, it is desirable touse a hollow pin 21'of a length substantially equal to the distance between the inner siii i aces oi plates 16.- This precludes l0ngi-- tudinal movement of the pin '21. Each piston 20 has hinge-pin engaging lugs 22 formed integrally thereon, and the assembly at this point may be termed a pianqhinge construction.

. AS'QbOY-estated, the pistons are all of equal length, and Fig. 3, clearly shows that he en er e r de o e t e annular e l of iaising Te p ope y r ce v e d ransmit power, the pistons are sealed where they pass through rotor R through the use of split ha t memb rs 23, a ied by ro r B n any suitable manner to permit rotation abouttheir centers as; the machine or device is opirate-11 his W ym. eet ng p st assenr bly eeiti edi the p on f hi h hin about a common center and maintain a proper working relation as the rotor R rotat-e abeu fis d cen er The nter of the pietei as em y isne xed-to any part of the ,de e e 6 13 23 are terme in rotor pla es 1 i te which lots mem er 23 ng g at eeh end t ereef; Proje tions 20." are ierm dje qriste s 20 ancl he 'p i i extend a e an th ugh lots 28 r as Qes iesheede l0 l2- As hawn in Fig. i,

2 slots 28 are of'sufiicient length to permit preieqtiens 20; to r ipreeate the desired fim ll I In the n an e, twepassages 24 and 5, .lQSPQQfi QlY hav been illustrated, each tit which leads to the cavity formed between tee .whlch v in diameter to always; be in communication it the bl QWBO' fq' med in p n Te the a a tureel gfthel tr tur ,have been cl erly'se ,forth and; illustrated, and it desired to the-inter and the; a n lar wall of the housing chamber. Tl reughathese passages, the fluid, .7 gaser o,the r-snhstanceaas the case may be ha les 1311s a tual p rts at the ends of these are, for ned of Slots26 which, if

desirable-may be staggered withirelation to V saroh otherfto p ends oi the pistons '20.-- e V Aswone examplelof' oillingtheparts of this I Ieclude undue wearing at the imiversaltde i ice' a gear o'il pump '27 is shown which-may be used to supplyoil to the in "of the rotor {Rjthrough passage 28 terminates-in a pocket 29 largeenough equalize pressure, slots 3113 .18 vprovided in each The size ofthese slots may be Varied to "meet conditions.

ew of the art,'the operation ofa' device h x-teeter is qbv eus- Th nov f aeignatu ie-f make clear that the particular use of the mechanism is not herein limited.

What is claimed and desired to secure by 3 Letters Patent of the United States is: c

1'. Ina device of the general character set forth, a housinghaving aehamber formed therein hollg-W'rotormounted for rotation within said chamber, a piston assembly having a plurality of pistons contained within said rotor; side walls for'said rotor and slots" in said side walls, said pistons being hingedly interconnected at their inner ends, each projecting through corresponding slots in said Walls and piston sealing means rotatably carried by said rotor and engaging said slots.

2, In cleviee ofthe sene talie arac e s fe hz a holl w r t r, s de walls or said tor and elotsii eaid wa ls, a Pi on a s mbly o tained ithin s id r t r, each pis en he e t exte d ng th e igh err pen n Slots n the walls f seidretor nd sealing means each pi t respeeti y in u ing a split shaf i ur alled r rot on the 7 a s. at: sa d} rot and e gag ng i said Sides thereet, th ends faid members bei g 7 fretatably ineunt d insaid ir ular openings I testim i y .Whereei l herenntoaifix my grio 

